Question 1204339
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Answer: 
Exact distance = {{{sqrt(61)}}}
Approximate distance = 7.8102497


Explanation


The two points we focus on are
O = ({{{x[1]}}}, {{{y[1]}}}, {{{z[1]}}}) = (1,0,2) and S = ({{{x[2]}}}, {{{y[2]}}}, {{{z[2]}}}) = (6,0,8)


Let's plug those coordinates into the 3D version of the distance formula.
{{{d = sqrt( (x[1]-x[2])^2+(y[1]-y[2])^2+(z[1]-z[2])^2)}}}


{{{d = sqrt((1-6)^2+(0-0)^2+(2-8)^2)}}}


{{{d = sqrt((-5)^2+(0)^2+(-6)^2)}}}


{{{d = sqrt(25+0+36)}}}


{{{d = sqrt(61)}}}


{{{d = 7.8102497}}} This value is approximate. Round this however needed.
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